The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2021
Filed:
Dec. 13, 2019
Applicant:
Mitsubishi Chemical Corporation, Chiyoda-ku, JP;
Inventors:
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 71/02 (2006.01);
U.S. Cl.
CPC ...
B01D 53/228 (2013.01); B01D 69/02 (2013.01); B01D 69/10 (2013.01); B01D 71/028 (2013.01); B01D 2257/406 (2013.01); B01D 2325/22 (2013.01);
Abstract
Provided is a method for separating ammonia gas using zeolite membrane having excellent separation stability at a high temperature capable of separating ammonia gas from a mixed gas composed of multiple components including ammonia gas, hydrogen gas, and nitrogen gas to the permeation side with high selectivity and high permeability. Also provided is a method for separating ammonia by selectively permeating ammonia gas from a mixed gas containing at least ammonia gas, hydrogen gas, and nitrogen gas using a zeolite membrane, wherein the ammonia gas concentration in the mixed gas is 1.0% by volume or more.